/*
 * Copyright 2009-2009 Tanesha Project. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 *    1. Redistributions of source code must retain the above copyright notice, 
 *    	 this list of conditions and the following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright notice,
 *    	 this list of conditions and the following disclaimer in the documentation 
 *    	 and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE FREEBSD PROJECT ``AS IS'' AND ANY EXPRESS OR 
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
 * SHALL THE FREEBSD PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 *  OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * The views and conclusions contained in the software and documentation are those 
 * of the authors and should not be interpreted as representing official policies, 
 * either expressed or implied, of the Tanesha Project.
 */
package com.google.api.chart;

import com.google.api.chart.encoding.SimpleURLEncoding;

/**
 * Creates number labels.
 * 
 * @see http://code.google.com/apis/chart/labels.html#data_point_labels
 * 
 * @author sorenad
 */
public final class NumberLabelMaker {
	
	public static NumberLabelMaker numberlabel() {
		return new NumberLabelMaker();
	}
	
	private String prefix = "";
	private String postfix = "";
	private String type = "f";
	private int precision = 0;
	private String coordinate = "";
	private String z = "";
	private String s = "";

	private NumberLabelMaker() {
	}

	@Override
	public String toString() {
		return prefix + "*" + type + precision + z + s + coordinate + "*" + postfix;
	}
	
	public NumberLabelMaker prefix(String prefix) {
		this.prefix = SimpleURLEncoding.encode(prefix);
		return this;
	}	

	public NumberLabelMaker postfix(String postfix) {
		this.postfix = SimpleURLEncoding.encode(postfix);
		return this;
	}	

	public NumberLabelMaker floatingpoint() {
		this.type = "f";
		return this;
	}
	public NumberLabelMaker percentage() {
		this.type = "p";
		return this;
	}
	public NumberLabelMaker scientific() {
		this.type = "e";
		return this;
	}
	public NumberLabelMaker currency(String currency) {
		this.type = "c" + currency.toUpperCase();
		return this;
	}
	public NumberLabelMaker precision(int precision) {
		this.precision  = precision;
		return this;
	}
	public NumberLabelMaker xvalue() {
		this.coordinate = "x";
		return this;
	}
	public NumberLabelMaker yvalue() {
		this.coordinate = "y";
		return this;
	}
	public NumberLabelMaker displayTrailingZeros() {
		this.z = "z";
		return this;
	}
	public NumberLabelMaker displayGroupSeparators() {
		this.s = "s";
		return this;
	}
}
